“Happy Diwali! @UN celebrates Diwali for 1st time. Thank you @UN_PGA for this initiative,” Akbaruddin said in another tweet, thanking General Assembly President Peter Thomson for the initiative.

He also tweeted a picture of passers-by clicking photographs of the building as well as being themselves clicked against the illuminated UN headquarters in the background.

Thomson also tweeted a picture of the UN building lit up in bright blue for Diwali and said “Light over darkness, hope over despair, knowledge over ignorance, good over evil – the UN lights up. Happy Diwali!”

The UN Secretariat building will be lit up for Diwali from October 29-31.

It is for the first time that the Indian festival of lights is celebrated at the world body after the UN General Assembly adopted a resolution in December, 2014 that acknowledged the “significance of Diwali”.

Noting that the festival is observed in many UN member states, the resolution had called on UN bodies to avoid holding meetings on Diwali, declaring it a no-meeting day.

From 2016 onwards, Diwali was made an optional holiday for the UN, India’s Permanent Mission to the world body said in a special video message.

Earlier in June, the UN building was lit up on the occasion of the International Yoga Day, with images of Yoga postures projected on the imposing headquarters.